Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing porous silicon carbide ceramic through reactive sintering and micro-oxidation treatment
The invention discloses a method for preparing porous silicon carbide ceramic through reactive sintering and micro-oxidation treatment. The method comprises the following steps: firstly ball-milling a certain amount of mesocarbon microbeads and silica powder to obtain mixed powder, secondly dry-pressing the mixed powder at room temperature to prepare a green body, and finally carrying out high-temperature reactive sintering under the condition of micro-oxidation treatment, thus obtaining the porous silicon carbide ceramic. The method has the advantages that plenty of silicon carbide whiskers are generated in situ by adopting micro-oxidation treatment; meanwhile, an SiO2 glass phase is generated, thus promoting sintering and forming sintering necks among silicon carbide particles; the method is simple to operate and has high production efficiency; and the porous silicon carbide ceramic prepared by adopting the method is uniform in pore size distribution, has high bending strength and has strength of 176MPa when the porosity is 32%.
Method for preparing porous silicon carbide ceramic through reactive sintering and micro-oxidation treatment
The invention discloses a method for preparing porous silicon carbide ceramic through reactive sintering and micro-oxidation treatment. The method comprises the following steps: firstly ball-milling a certain amount of mesocarbon microbeads and silica powder to obtain mixed powder, secondly dry-pressing the mixed powder at room temperature to prepare a green body, and finally carrying out high-temperature reactive sintering under the condition of micro-oxidation treatment, thus obtaining the porous silicon carbide ceramic. The method has the advantages that plenty of silicon carbide whiskers are generated in situ by adopting micro-oxidation treatment; meanwhile, an SiO2 glass phase is generated, thus promoting sintering and forming sintering necks among silicon carbide particles; the method is simple to operate and has high production efficiency; and the porous silicon carbide ceramic prepared by adopting the method is uniform in pore size distribution, has high bending strength and has strength of 176MPa when the porosity is 32%.
Method for preparing porous silicon carbide ceramic through reactive sintering and micro-oxidation treatment
XIA HONGYAN (Autor:in) / YANG SHAOHUI (Autor:in) / WANG HONGJIE (Autor:in) / SHI ZHONGQI (Autor:in) / WANG JIPING (Autor:in) / QIAO GUANJUN (Autor:in) / ZHANG KUO (Autor:in) / YANG JIANFENG (Autor:in)
04.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Preparation method for preparing silicon carbide ceramic through pressureless sintering
| Europäisches Patentamt | 2024
Reactive sintering connection method for silicon carbide ceramic biscuits
| Europäisches Patentamt | 2015
Method for preparing silicon carbide with ultralow boron content through reactive sintering
| Europäisches Patentamt | 2024
Method for preparing one-way through porous silicon carbide-silicon ceramic material
| Europäisches Patentamt | 2016
METHOD FOR PREPARING POROUS SILICON CARBIDE CERAMIC CARRIER
| Europäisches Patentamt | 2021